Hi all,
I thought this was worth sharing. With Keil uVision v5.34 installed, and the 1.20 Addon pack installed within that, I could not get the template (from the 1.20 Firmware Library, all from gigadevice.com) working - it kept giving an error message, and I could not change the Device setting.
Turns out the way to remedy it is to select: Project - Manage - Migrate to Version 5 Format
Then the Device (in Options for Target) is selectable and the right Programming Algorithm for downloading to the MCU is available.
Hope this helps anyone.